Corporation)(主要发行ABC影业公司(英语:List of films produced by American Broadcasting Company)的电影) 全国通用影业(英语:National General Pictures)(主要发行电影中心影业(英语:Cinema Center Films)的电影) 联邦联合娱乐(英语:Commonwealth ...
On 16 May 1922, the Metropolitan Vickers Company Ltd. ("Metrovick") commenced test broadcasting from its own station in Manchester, identified as 2ZY. On 18 October 1922 the British Broadcasting ...